Tractor.



C. SINTZ.

TRACTOR.

APPLlcATloN FILED ocT. l5, 1913.

Patented Mar. 25,1919.

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f Pfeiffer CZavde S672 fz CQSINIZ.

TRACTOR.

Mmc/mon FILED our. l5. |913,

1,298,262. l Patented Mar.v25,1919.

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c. SINTZ.

TRACTOR.

APPLICATION FILED ocT. I5. I9I3.

Patented Mar. 25, 1919.

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CLAUDE SINTZ, F DETROIT, MICHIGAN, ASSIGN OR T0 STEEL KING MOTOR PLOW COM- PANY, 0F DETROIT, MICHIGAN,` A CORPORATION OF MICHIGAN.

TRACTOR.

Application filed october 15, 1913.

, citizen of the United States of America,

residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Tractors, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to tractors and more particularly to tractors for propelling farming implements or the like.

The invention resides in the novel construction `and arrangement of the connection between the load and the tractor, and in certain combinations as will more fully herein after appear.

In the drawings#- Figure lis a side elevation of the device embodying the invention;

Fig. 2 is a top plan view thereof with certain parts removed;

Figs. 3 and 4 are enlarged views illustrating the connection between the tractor and the implement; and

Fig. 5 is a sectional detail view.

A designates the frame of the tractor, B C the wheels arranged adjacent one end of the frame, and D the steering wheel positioned adjacent the opposite end of the frame A. The main traction wheel B is driven from a suitable motor E which is arranged upon the frame A, the driving connection being herein shown as comprising a drive shaft F having a sprocket G connected by means of a chain I to a gear H that is attached to the wheel. With this general type of tractor, that is-where the wheel or wheels adjacent one end of the frame only are driven, the driving mechanism transmits to the end of the frame adjacent to which is the undriven wheel or wheels, a force tendin to move the frame about the aXis of the drlving wheel. To overcome this tendency constructions have been employed in which considerable weight has been positioned adjacent the undriven wheel `or wheels, but this is objectionable, for the weight is not properly distributed for both heavy and light tractor loads. With my improved construction the connection between the selfpropelled tractor and the load is such that the latter transmits to the tractor frame a force proportioned in relation to and oppas'J Specification of Letters Patent.

Patented Mar. 25, 1919.

Serial No. 795,186.

ing the force transmitted by the driving mechanism.

While my invention may be embodied in various constructions, in order to give a better understanding of the improvement I will describe the same in connection with a tractor in which the main traction wheel B is arranged at the rear end of the frame and the steering wheel D. at the front end of the frame, the load being pulled by the tractor.

As shown the frame A is composed of side bars I J connected at opposite ends by cross-bars K L, the side bars being provided adjacent the rear ends of the frame with upwardly-extending bearings M for the axle N of the wheel B. O is a yoke connected to the side bars adjacent their forward ends and having a centrally, vertically-extending bearing for receiving the steering spindle of the yoke which carries the aXle upon which the wheel D is journaled, this mounting for the steering wheel being of well-known construction and therefore, not illustrated in detail.

With this construction it will be seen that the resistance oered to the turning of the wheel B will cause the driving mechanism to transmit a force to the forward end of the frame, tending to li-ft the same, and whenever the force required to move the load becomes greater than the force required for lifting the frame upward, the forward end of the. frame would be rocked upwardly about the axis of the wheel B, providing the motor has sufficient power. Shifting of the weight toward or adding weight to the forward end of the frame to overcome rearing of the forward end is not desirous, since with ordinary loads the steering wheel will be forced into the ground if the latter is soft, preventing proper steering of the tractor and also increasing the power required to move the tractor.

With my improvement the load which is herein shown as comprising a plow, is as before stated, connected to the tractor so as to transmit to the frame a force acting in a direction to oppose the force transmitted to the frame by the driving mechanism. This connection may be of various construe tions but in the drawing I have shown the preferred form thereof. Thus, pivotally, connected to each side bar I J at P is an arm Q which-has its outer end R pivotally connected at S' to one end of a link T. The opposite end of this link is pivotally connected at'U to an arm V ixedly connected to a shaft W. This shaft extends through and is journaled in the axle N, which is hollow. At one side of the frame one ofthe arms as V is provided with an integral eX- tension X which forms a lever for rocking the shaft W to raise and lower the arm Q. The lever X is held in' its d'iferent positions of adjustment by means of a tooth segment Y rigidly attached tov theframe, and

' a dog -Z carried by the lever and adapted to engage the teeth of the segment. The plow is provided with forwardly-extending arms A B arranged upon opposite sides lof the frame' and'vpivotally connected at C to the outer ends of the arms Q.

When vthe parts are in the position shown in full lines in Fig. 1, the .arms Q which in eifect constitute levers, will transmit a force tothe frame A, tendingl to move the forward end of the frame downward'.- The leverage of the connection is so computed as to proportion the force acting Vte movethe frame downward in relation to the forceof thev driving mechanism acting 4to move the frame upward, the weight upon the forward end of the frame being of course, taken into consideration. As the load increasesit will be apparent that the opposingffores are also increased, but when considerablefad'ditional load is to be added'the armsQ lare shifted farther downward-see Vdotted lines in Figs. 3 and @L-ther'e'by'H increasing the leverage through which acts thevforceltending to move the forwardend ofthe frame downward and properly proportion-ing such force in relation to the increased upwardly Y acting force, caused by theadditional power requiredto move the tractorf- By the construction i illustrated, .when lthe plow is lowered to increase fthe depth of the furrowwhich necessarily increases the load-the leverage of the connection is automatically increased. Furthermore, .the arrangement in all positionsof adjustment of the plow is such "that the load acts upon the members Q in lines substantially parallel tov the sides of the frame. The link T and arm Q, Provide in effect'a toggle'lever, and therefore, permit Vthe vertical adjustment :of the implement'to be easilyI efected. In order to further assist in allowing the vertical adjustment of the implementto be readily effected when the -plowshares are in the ground, a spring a Ais'provided which is connected atene-end to the side-bar of the frame as at b, and has its opposite end attached lto anv ,outwardly-project'ing-l crank c on the arm Q. Preferably each arm Q is provided with such a spring;

Y Preferably the frame A is provided wit an extension D at one side thereof which carries the wheelC, so as-to give the desired stability to the frame'against'sidewise tipping. The axis of the wheel C is in alinement lwith the axisa of'` the fwh'eel' B, :but the former wheel is not' driven.

My invention while exceedingly desirable, and particularly applicable for connecting plows to self-propelled tractors, is of course, adaptedl for attaching other implements' to tractors and I do not desire to limit my invention tov the "particular embodiment illustrated or the specific arrangement-of parts shown. Y

What I claim as my invention is'zi, 1. The combination with a self-propelled tractor including a frame, va traction wheel andasteering wheel", the-dead weight on said l frame being distributed with a" predeterminedly limited: load' upon` the steering wheel, of means for propelling the 'tractor reacting counter to the dea-dloatl'onf` the steeringjwheel, a draftload, an'dan"'adjust-V able connection forsaid'draft load-'to said frame constructed to 'transmita force 'to-the frame counter to therea'ctive' fercefrornfthe propelling mechanism# and prprtined thereto to substantially neutralize 'thetrn- Y mentioned arms', and anAr adjustingflever forming-an extension of one of'thearr'ns attached tesaid shaftf v Y ,Y

3. The combination of a self-propelled tractor, including the frame andmean's for propelling the tractor, said means transmitting a force to the frame' 'tendingf'to move one end ofthe frame in a direction transverse'to the tractive movementofth'e tractor, an 4armpivotally Icon'nected to theA frame, an adjusting lever, a link having its'l opposite ends respectively pivotally connected Ito 'said lever and to sai'dlari'i'i, means 4forholdin"g-said lever in its different positions of adjustment, a. load, and a connectionbetweensaid Vload and said arm, the proportion-,of thefparts being such thatthe reaction ,of the 'load 'substantially coun'terb'alances the Ireaetion-o'f the tractor to 'maintain a`substantiallyfconstant holding-down force; n n y Y 4. The combinationlof a` self-propelled tractor, including theframe, a driveirwhe'el and means for divingithe wheeLsaid-:means transmitting-a force to' the frame to move one end of theframe upwardlyfa load, and a connection between the load and the frame constructed to transmit a force to the frame proportioned in relation to the first-mentioned force and acting to oppose the same, Said connection comprising arms connected to the frame upon opposite sides of the Wheel and to which said load is attached, the proportion of the parts being such that the reaction of the load substantially counter-balances thc reaction of thc tractor to maintain a substantially constant holding-down force.

5. The combination of a self-propelled tractor, including the frame, a driven wheel and means for driving the Wheel, said means transmitting a force to the frame tending to move one end of the frame upwardly, a load, and a connection between the load and the frame constructed to transmit a force to the frame proportioned in relation to the firstmentioned force and acting to oppose thc same, said connection comprising arms upon opposite sides of the Wheel and to which said load is attached and means for simultaneously adjusting said arms, the proportion of the parts being such that the reaction of the load substantially counterbalances the reaction of the tractor to maintain a substantially constant holding-down force.

In testimony whereof I alix my signature in presence of two Witnesses.

CLAUDE SINTZ. Vitnesses:

WM. J. BELKNAP, H. F. MOELLER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C." 

